EP2163857B1 - Codeur magnétique et palier à roulement - Google Patents

Codeur magnétique et palier à roulement Download PDF

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Publication number
EP2163857B1
EP2163857B1 EP08777826.2A EP08777826A EP2163857B1 EP 2163857 B1 EP2163857 B1 EP 2163857B1 EP 08777826 A EP08777826 A EP 08777826A EP 2163857 B1 EP2163857 B1 EP 2163857B1
Authority
EP
European Patent Office
Prior art keywords
slinger
inner ring
magnetic encoder
adhesive
magnetized
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08777826.2A
Other languages
German (de)
English (en)
Other versions
EP2163857A4 (fr
EP2163857A1 (fr
Inventor
Yasuhiko Ishii
Naoki Morimura
Yoshihiro Itoh
Takashi Kaneike
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nakanishi Metal Works Co Ltd
JTEKT Corp
Original Assignee
Nakanishi Metal Works Co Ltd
JTEKT Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nakanishi Metal Works Co Ltd, JTEKT Corp filed Critical Nakanishi Metal Works Co Ltd
Publication of EP2163857A1 publication Critical patent/EP2163857A1/fr
Publication of EP2163857A4 publication Critical patent/EP2163857A4/fr
Application granted granted Critical
Publication of EP2163857B1 publication Critical patent/EP2163857B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
    • F16C33/7879—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
    • F16J15/326—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals with means for detecting or measuring relative rotation of the two elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/30—Material joints
    • F16C2226/40—Material joints with adhesive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
    • G01D2205/80—Manufacturing details of magnetic targets for magnetic encoders

Definitions

  • the present invention relates to a magnetic encoder for use in detecting a rotating condition of a wheel or the like and a bearing to which the same magnetic encoder is assembled.
  • a rolling bearing on which a wheel of a vehicle such as a motor vehicle is mounted there is, for example, a rolling bearing which includes an outer ring and an inner ring which is provided on the outer ring via rolling elements.
  • a sensor device for detecting a rotating speed of a wheel is used to control an anti-lock braking system (ABS) of a motor vehicle, and there is known a configuration in which the sensor device is mounted on a sealing device for sealing an annular space between the outer ring and the inner ring so as to be integrated into the sealing device to thereby realize miniaturization of the sensor device.
  • ABS anti-lock braking system
  • a sensor device As a sensor device provided on the sealing device, there is a sensor device as is shown in Fig. 5 , for example, which includes a metal core 103 which is fixed to an inner circumference of an outer ring 107, which is a fixed ring, a sealing main body 106 which is attached to an inner circumferential side of the metal core 103, a magnetic encoder 101 made up of a metallic slinger 102 which is fixed to an outer circumference of an inner ring 108, which is a rotating ring, and an annular magnetized member 104 which is bonded to an outer (a right-hand side in Fig.
  • the slinger 102 and the magnetized member 104 are bonded together by a phenol resin based adhesive or an epoxy resin based adhesive.
  • the magnetic encoder 101 can bear stress that is produced by a difference in thermal expansion coefficient between the slinger 102 and the magnetized member 104 in a range from -40[deg.]C to 120[deg.]C which is regarded generally as a severe temperature environment, and the magnetized member 104 can be prevented from being separated from the slinger 102, for example.
  • the magnetic encoder 101 cannot bear stress produced by the difference in thermal expansion coefficient under an environment severer than the aforesaid temperature environment, and the magnetized member 104 is separated from the slinger 102, leading to a problem that the magnetic encoder 101 cannot be used.
  • the invention has been made in view of the problem, and an object thereof is to provide a magnetic encoder which can prevent a magnetized member from being separated from a fixed member to which the magnetized member is fixed under a severe temperature environment and a bearing to which the magnetic encoder is assembled.
  • magnetic encoders are made by integrating a magnetized member which is molded by mixing magnetic powder into a resin matrix into a surface of a slinger of a sealing device via a silicone based adhesive film. Normally, the thickness of an adhesive film is preferably made thinner in order to make the adhesive force of an adhesive higher.
  • thermal shock test has been carried out to study the durability of silicone resin based adhesives against thermal shocks (150°C to -40°C) in the optimum using condition. Although details of this test will be shown in the example, which will be described later, it has been verified that the silicone resin based adhesives have sufficient thermal shock resistance under the optimum using condition (the thickness of an adhesive film is 50 ⁇ m or more and 100 ⁇ m or less).
  • a magnetic encoder comprising a fixed member which is fixed to a rotating member and a magnetized member which is attached to the fixed member, characterized in that the magnetized member is bonded to the fixed member with a silicone resin based adhesive, and in that a thickness of an adhesive film of the silicone resin based adhesive is 50 ⁇ m or more and 100 ⁇ m or less.
  • a rolling bearing comprising an inner ring on which a wheel of a vehicle is mounted, an outer ring provided so as to fit on the inner ring, a plurality of rolling elements provided between the inner ring and the outer ring, and an annular sealing device provided at an axial end portion for sealing an annular space between the inner ring and the outer ring, characterized in that the sealing device comprises a metal core fitted in the outer ring so as to be secured thereto and an annular slinger fitted on the inner ring so as to be secured thereto and comprises further a magnetic encoder which is made by integrating a magnetized member which is molded by mixing powder of a magnetic material into a resin matrix into a surface of the slinger via a silicone based adhesive film.
  • the magnetized member is bonded to the fixed member by the silicone resin base adhesive and the thickness of the adhesive film of the silicone resin based adhesive is 50 ⁇ m or more and 100 ⁇ m or less, compared with the conventional case in which the silicone resin based adhesive is not used in that condition, stress produced by a difference in thermal expansion coefficient between the fixed member and the magnetized member under the severe environment can be borne, thereby making it possible to prevent the magnetized member being separated from the fixed member.
  • an adhesive surface of the fixed member with the magnetized member may be worked to be roughened. According to this configuration, the adhesive enters the roughened surface of the fixed member, so that the magnetized member can be bonded more rigidly.
  • the magnetized member is preferably molded by mixing magnetic powder into a resin. According to this construction, elasticity and magnetic properties of magnetized members which match applications thereof can be obtained by changing types and compositions of resins and magnetic powder.
  • the rotating member may constitute an inner ring of a bearing
  • the fixed member may constitute a slinger of a sealing device provided on the bearing which is fitted on the inner ring. According to the construction, in the sensor device provided on the sealing device of the bearing, the magnetized member can be prevented from being separated from the slinger.
  • the magnetized member since the magnetized member is bonded to the fixed member by the silicone resin based adhesive and the thickness of the adhesive film of the silicone resin based adhesive is 50 ⁇ m or more and 100 ⁇ m or less, the magnetized member can be prevented from being separated from the fixed member to which the magnetic member is fixed under the severe temperature environment.
  • the magnetized member can be prevented from being separated from the fixed member to which the magnetized member is fixed under the severe temperature environment by incorporating the magnetized member which is molded by missing the power of a magnetic material into the resin matrix into the surface of the slinger via the silicone based adhesive film.
  • Fig.1 is a sectional view showing a rolling baring to which a magnetic encoder according to an embodiment of the invention is assembled.
  • Fig. 2 is a sectional view showing the magnetic encoder in Fig. 1 .
  • a left-right or horizontal direction is referred to as an axial direction
  • an up-down or vertical direction is referred to as a diametrical direction.
  • an exterior side of a sealing device is referred to as an axially outer side, and an interior side as an axially inner side.
  • this rolling bearing 1 includes an inner ring 9 on which a wheel of a vehicle is mounted, an outer ring 3 which is provided so as to fit on the inner ring 9, and a plurality of or double rows of rolling elements 4, 5 provided between the inner ring 9 and the outer ring 3.
  • the inner shaft 2 which is a rotating member, has a flange 2c on which a wheel-side member (not shown) is mounted at an end portion thereof which faces a vehicle's outer side (on a left-hand side in Fig. 1 ), and a small diameter portion 2d is formed on a side of the inner shaft 2 which faces a vehicle's inner side (on a right-hand side in Fig. 1 ), whereby an inner ring constituting member 6 is fitted on the small diameter portion 2d.
  • the inner ring 9 is made up of the inner ring constituting member 6 and the inner shaft 2.
  • An inner raceway 6a for the row of rolling elements 5 on a side facing the vehicle's inner side is formed on an outer circumferential surface of the inner ring constituting member 6.
  • an inner raceway 2a for the row of rolling elements 4 on a side facing the vehicle's outer side is formed at an intermediate diameter portion 2e which is situated at an axially intermediate portion of the inner shaft 2.
  • an end portion of the inner shaft 2 which faces the vehicle's inner side has a crimped portion 2f which is formed by expanding an outer circumferential side radially outwards, and this crimped portion 2f prevents the dislocation of the inner ring constituting member 6 from the inner shaft 2 so as for the inner ring constituting member 6 to be fixed to the inner shaft 2.
  • the outer ring 3 is fitted on the inner ring 9 via the double rows of rolling elements 4, 5 and is provided concentrically with the inner ring 9.
  • Double rows of outer raceways 3a for the double rows of rolling elements 4, 5 are formed on an inner circumferential surface of the outer ring 3.
  • a flange 3c is formed on an outer circumferential surface of the outer ring 3, and by this flange 3c being attached to a vehicle body side member, not shown, the bearing is fixed to the vehicle body side member.
  • the outer ring 3 is referred to as a fixed side and the inner ring 9 is referred to as a rotating side which rotates about an axis thereof.
  • annular sealing devices 7 are provided at both axial end portions to seal an annular space R between the inner ring 9 and the outer ring 3.
  • the sealing device shown in the sectional view of Fig. 2 is such as to be used as the sealing device on the vehicle's outer side in Fig. 1 .
  • This sealing device 7 is provided between an inner circumferential surface 3b of the outer ring 3 and an outer circumferential surface 6b of the inner ring constituting member 6, so as to prevent leakage of a lubricant in an interior of the bearing which constitutes a rolling element 4, 5 side thereof and infiltration of foreign matters such as muddy water and the like into the rolling element 4, 5 side from an exterior portion of the bearing.
  • the sealing device 7 includes a metal core 10 which is fitted in the outer ring 3 so as to be secured thereto and a slinger 11 which is fitted on the inner ring constituting member 6 so as to be secured thereto.
  • the metal core 10 is made up of a metal core cylindrical portion 10a which is fitted in the outer ring 3 and a metal core annular portion 10c which is bent radially inwards from an axial end portion 10b of the metal core cylindrical portion 10a and has a substantially L-shaped section.
  • the metal core 10 is made into an annular shape on the whole and is formed by pressing, for example, cold-rolled steel sheet such as SPCC, SPCD, SPEC or the like.
  • a sealing main body 12 which is made up of an elastic member such as rubber, for example, is secured to the metal core 10 so as to be integrated with the metal core 10.
  • the slinger 11 is made up of a slinger cylindrical portion 11 a which is fitted on the outer circumferential surface 6b of the inner ring constituting member 6 and a slinger annular portion 11c which is bent radially outwards from the other axial end portion of the slinger cylindrical portion 11a and has an L-shaped section.
  • This slinger 11 is made into an annular shape on the whole and is formed by pressing, for example, sheet metal such as stainless steel or the like.
  • the sealing main body 12 has a base portion 12a which is attached to a radially inward end portion on the other axial side of the metal core annular portion 10c and includes radial lips 13 which extend from the base portion 12a in an elastically deformed condition so as to be brought into sliding contact with an outer circumferential surface of the slinger cylindrical portion 11a and an axial lip 14 which extends from the base portion 12a in an elastically deformed condition so as to be brought into sliding contact with an axially inner surface of the slinger annular portion 11c.
  • the sealing device 7 is assembled so that the metal core cylindrical portion 10a of the metal core 10 faces the slinger cylindrical portion 11 a of the slinger 11 and that the metal core annular portion 10c of the metal core 10 and the slinger annular portion 11c of the slinger 11.
  • An annular magnetized member 15 is bonded to an axially outer surface 11d of the slinger 11 so as to be integrated into the slinger 11, and this magnetized member 15 and the slinger 11 make up a magnetic encoder 16. Then, this magnetic encoder 16 and a sensor 18 which is disposed to face the magnetized member 15 of the magnetic encoder 16 make up a sensor device 19.
  • the magnetized member 15 is an annular magnet on which N poles and S poles are magnetized alternately in a circumferential direction, and a plastic magnet which is injection molded by mixing powder of a magnetic material such as a ferrite based magnet into a thermoplastic resin matrix such as a polyamide based resin or the like, a bonded magnet (a rubber magnet) which is molded by mixing powder of a magnetic material such as a neodymium based magnet into a synthetic resin matrix such as rubber or the like is used.
  • magnetic encoders 16 can be formed which have heat resistances, magnetic force properties and the like according to various applications.
  • the sensor 18 is made up of an eddy current displacement sensor, for example.
  • the sensor 18 generates a magnetic field between the magnetic encoder 16 and itself and detects a change in a magnetic flux density of the magnetic field which corresponds to the rotation of the bearing by a detecting unit.
  • the sensor 18 is designed to output the change as a detection (voltage) signal to a control unit such as an ECU or the like of a vehicle, which is not shown.
  • the slinger 11 and the magnetized member 15 are bonded together at an adhesive surface 17 with a silicone based adhesive.
  • the silicone based adhesive is an adhesive which uses a thermoplastic resin such as organopolysiloxane or the like as a principal constituent.
  • the silicone based adhesive since the silicone based adhesive has superior heat resistance and freeze resistance and is made into an rubber-like elastic substance when it sets, the silicone adhesive can be used to bond a target material for bonding which has a large thermal expansion coefficient difference and which generates large shearing stress.
  • a thickness of an adhesive film of the silicone based adhesive is optimally 50 ⁇ m or more and 100 ⁇ m or less when considering thermal shock resistance. The grounds for the optimal condition will be described in the following example.
  • Fig. 3 is a sectional view showing a thickness of the adhesive film of the silicone resin based adhesive when a thermal deformation occurs.
  • Fig. 4 is a graph showing a relationship between thickness and elongation of an adhesive film of a silicone resin based adhesive.
  • a limit value at which the silicone resin based adhesive used in this verification test can be used is 230% in elongation. Namely, when the elongation surpasses 230%, the adhesive fails and cannot be used any more.
  • the adhesive layer thickness is 50 ⁇ m or more and 100 ⁇ m or less.
  • adhesives were treated at 150°C for 10 minutes, and thereafter, thermal shock was applied to the adhesives by repeating a high-temperature treatment and a low-temperature treatment as a treatment at -40°C for 10 minutes being referred to as one cycle, so as to verify the numbers of cycles that the adhesives could bear.
  • the following adhesives were used as examples and a comparison example.
  • Example 1 Thermal shock test results (150°C 10 min ⁇ -> -40°C 10 min)
  • Example 1 1015 cycles, no problem occurred
  • Example 2 1015 cycles, no problem occurred
  • Example 3 1015 cycles, no problem occurred
  • Comparison Example 1 421 to 890 cycles, cracks generated
  • Example 1 Silicone resin based adhesive (TSE 322 by GE Toshiba Inc.)
  • Example 2 Silicone resin based adhesive (TSE3280-G by GE Toshiba Inc.)
  • Example 3 Silicone resin based adhesive (KE-347 by Shinetsu Silicone Company Ltd.)
  • Comparison Example 1 Phenol resin based adhesive (C-12 by Tokyo Chemical Company Ltd.)
  • the silicone resin based adhesives have sufficient thermal shock resistances under the optimum using condition (the adhesive layer thickness is 50 ⁇ m or more and 100 ⁇ m or less).
  • the magnetic encoder 16 of the invention can also be assembled to other vehicle rolling bearings than the rolling bearing 1 exemplified in the embodiment which include, for example, a tapered roller bearing and a straight roller bearing.
  • the application of the magnetic encoder of the invention is not limited to vehicles. It is also applicable to bearing devices in general-use machineries.
  • the magnetized member 15 is described as being bonded only to the axially outer surface 11d, the magnetized member 15 may be bonded from a radially outer end portion to the axially outer surface 11d of the slinger annular portion 11c.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Rolling Contact Bearings (AREA)

Claims (6)

  1. Codeur magnétique (16) comprenant un élément fixe (11) qui est fixé sur un élément tournant (9) et un élément magnétisé (15) qui est fixé sur l'élément fixe (11), dans lequel
    l'élément magnétisé (15) est lié à l'élément fixe (11) avec un adhésif à base de résine de silicone, caractérisé en ce que
    une épaisseur d'une couche adhésive de l'adhésif à base de résine de silicone est supérieure ou égale à 50 µm et inférieure ou égale à 100 µm.
  2. Codeur magnétique (16) selon la revendication 1, dans lequel
    une surface adhésive de l'élément fixe (11) avec l'élément magnétisé (15) est traitée de manière à être rugueuse.
  3. Codeur magnétique (16) selon la revendication 1, dans lequel
    l'élément magnétisé (15) est moulé par mélange d'une poudre magnétique dans une résine.
  4. Codeur magnétique (16) selon la revendication 1, dans lequel
    l'élément tournant (9) est une bague interne d'un palier (1), et l'élément fixe (11) est une bague d'éjection d'un dispositif d'étanchéité (7) agencé sur le palier (1), qui est assemblée sur la bague interne (9).
  5. Palier à roulement (1) comprenant une bague interne (9) sur laquelle une roue d'un véhicule est montée, une bague externe (3) agencée de manière à s'assembler sur la bague interne (9), une pluralité d'éléments roulants (4, 5) agencés entre la bague interne (9) et la bague externe (3), et un dispositif d'étanchéité annulaire (7) agencé au niveau d'une partie d'extrémité axiale afin d'assurer l'étanchéité d'un espace annulaire (R) entre la bague interne (9) et la bague externe (3), dans lequel
    le dispositif d'étanchéité (7) comprend un noyau métallique (10) assemblé sur la bague externe (3) de manière à être fixé sur celle-ci et une bague d'éjection annulaire (11) assemblée sur la bague interne (9) de manière à être fixée sur cette dernière, et comprend en outre :
    un codeur magnétique (16) selon la revendication 3, dans lequel la bague d'éjection (11) est l'élément fixe.
  6. Palier à roulement selon la revendication 5, dans lequel la bague d'éjection (11) comprend une partie cylindrique de bague d'éjection (11a) qui est assemblée sur une surface circonférentielle externe (6b) de la bague interne (9) et une partie annulaire de bague d'éjection (11c) qui est repliée radialement vers l'extérieur à partir d'une partie extrémité axiale de la partie cylindrique de bague d'éjection (11a), et en ce que l'élément magnétisé (15) est lié à une surface axialement à l'extérieur (1 1d) de la bague d'éjection (11).
EP08777826.2A 2007-07-04 2008-07-03 Codeur magnétique et palier à roulement Not-in-force EP2163857B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007176589A JP4859772B2 (ja) 2007-07-04 2007-07-04 磁気エンコーダ
PCT/JP2008/062074 WO2009005127A1 (fr) 2007-07-04 2008-07-03 Codeur magnétique et palier à roulement

Publications (3)

Publication Number Publication Date
EP2163857A1 EP2163857A1 (fr) 2010-03-17
EP2163857A4 EP2163857A4 (fr) 2012-09-26
EP2163857B1 true EP2163857B1 (fr) 2014-09-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08777826.2A Not-in-force EP2163857B1 (fr) 2007-07-04 2008-07-03 Codeur magnétique et palier à roulement

Country Status (5)

Country Link
US (1) US8313241B2 (fr)
EP (1) EP2163857B1 (fr)
JP (1) JP4859772B2 (fr)
CN (1) CN101688792B (fr)
WO (1) WO2009005127A1 (fr)

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DE102011004706A1 (de) * 2011-02-25 2012-08-30 Schaeffler Technologies Gmbh & Co. Kg Kegelrollenlager mit Käfig
JP2016038294A (ja) * 2014-08-07 2016-03-22 日本電産サンキョー株式会社 磁気式リニアエンコーダ
EP3104031B1 (fr) * 2015-06-10 2019-08-07 MAHLE International GmbH Élément coulissant comprenant un adhésif flexible
KR101931283B1 (ko) * 2017-06-07 2018-12-21 현대 파워텍 주식회사 변속기의 슬리브 결합 구조체

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JP4135079B2 (ja) * 2002-12-19 2008-08-20 東洋紡績株式会社 透明導電性フィルム及び透明導電性シートの製造方法、及びタッチパネル
US20050007226A1 (en) * 2003-05-22 2005-01-13 Uchiyama Manufacturing Corp. Magnetic encoder
JP4178412B2 (ja) * 2004-08-23 2008-11-12 日本精工株式会社 磁気エンコーダ及びその製造方法並びに転がり軸受ユニット
CN100567904C (zh) * 2004-01-22 2009-12-09 日本精工株式会社 磁编码器和轴承
DE202005021477U1 (de) 2004-01-22 2008-04-10 Nsk Ltd. Magnetischer Encoder und Lager
JP2005321307A (ja) * 2004-05-10 2005-11-17 Nsk Ltd 磁気エンコーダ及び当該磁気エンコーダを備えた転がり軸受ユニット
JP4586475B2 (ja) 2004-09-27 2010-11-24 日本精工株式会社 磁気エンコーダ
WO2006121052A1 (fr) * 2005-05-10 2006-11-16 Nsk Ltd. Codeur magnetique et unite de palier a roulement comprenant un codeur magnetique
JP4639955B2 (ja) * 2005-05-25 2011-02-23 日本精工株式会社 磁気エンコーダ及び前記磁気エンコーダを備える転がり軸受ユニット
JP4899404B2 (ja) * 2005-10-05 2012-03-21 日本精工株式会社 エンコーダ付き転がり軸受
US20070139035A1 (en) * 2005-12-16 2007-06-21 Jtekt Corporation Magnetized pulsar ring
CN100390505C (zh) * 2006-01-20 2008-05-28 安徽金海迪尔信息技术有限责任公司 绝对式多圈磁编码器

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CN101688792A (zh) 2010-03-31
US20100104230A1 (en) 2010-04-29
WO2009005127A1 (fr) 2009-01-08
CN101688792B (zh) 2012-07-18
EP2163857A4 (fr) 2012-09-26
JP2009014509A (ja) 2009-01-22
US8313241B2 (en) 2012-11-20
JP4859772B2 (ja) 2012-01-25
EP2163857A1 (fr) 2010-03-17

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